Process of producing carbonaceous pigments.



UNITED STATES PATENT '0FFIGE.

' DAVID J. OGILVY, or CINCINNATI, OHIO. K V PROCESS o PROLDUCING CARBONACEOUS elemsnrs.

To all whom it may concern: 7

Be it known that I, DAVID J. OGILVY, a citizen of the United States, and a resident of the city of Cincinnati, in the county of Hamilton and State of Ohio, have invented a new and useful Process of Producing'Black and Dark Carbonaceous Pigments, of which the division of the application bearing Sen 648,167, filed August 13, 1897.

. following is a specificatiornthe same bein a The object of this process is to produceeconomically and conveniently a superior qpality of black and dark pi ments. This 0, i'ect I attain 'by producing om any suitb e material'a car a onaceous flame and iminge the flame on water or an aqueous surace, WhlCh results in a carbonaceous deposit on the water. The carbonaceous flame is produced on'a moving-source from natural or artificial hydrocarbons, solid, liquid, or gasepus, and the flame when produced is then directed so that it will strike or impinge at any proper angle and distance (so as to bestow the most satisfactory results) on the water or aqueous surface on. which it strikes. The water may be of any pro er temperature and of any desired purity ans in any proper condition of motion. As the carbonaceous deposits are often repellent in their disposition toward water, there may when desired be added to the water which is necessary in the operation substances which reduce or overcome the repellent nature" of the deposit toward the water and which facilitates the miscibility of the deposit and the water.

ong such substances are potassium and sodium hydroxids and carbonates, ammonia and ammonium chlorid, acetic acid and acetates 'of potassium and sodium, phenic acid, sugar, &c. For most purposes a dilute solution of sodium hydroxid is sufiicient.

From the foregoing explanations it is ob vious that there are numerous methods in which the general principles of my invention may be applied. The simplest and most easily illustrated working exam le of my improvements is merely to allow tlEe flame from Specification of Letters Patent. Originalapplioation filed August 18, 1897 Serial No. 648,167. Divided and this application filed July 28, 1902.

attained on the su operation.

Patented Feb. 27, 1906.,

Serial o. 117,292.

process are the following: Meta lic scrapers are unnecessary for removing the deposit, as the carbon being collected on a wet surface is easily removed by a bath, spray, &c. On account of the man motions which may be r ice of water a fresh surface can always be presented to the impingingbflame. Consequently there is little dangerof u'rnin the deposit. The process may be conducted continuously, as the carbon d e'- posit is easily removed while the rocess 1s m The carbonaceous epos1t may be conveniently handled with pumping appliances, as it is easy to have it m a semlfluid condition of any deslred consistency. Therefore from a hygienic view this is a decided improvement over the old methods of makin lamp and carbon blacks.

at I claim as new and of my invention, and desire to secure by Letters Patent, 1s 1. The process of producing black or darkcolored pigments by impinging carbonaceous flames produced on a moving source, on water in a state of motion.

2. The process of producing black or darkcolored pigments by impinging carbonaceous flame in motion on water in motion, said water containing suitable soluble' material whereby the repellent properties of the carbonaceous deposit toward the water are d1- minished or overcome.

' DAVID J. OGILVY. Attest:

D. C. KELLER, CHARLES 1, SPIEGEL. 

